Peripheral Image Luminance Correction for Immersive Displays
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Solution Overview
Problem
Existing methods for extending video content beyond a central image to enhance user experience often result in excessive luminance, distracting viewers and compromising the artistic intent, especially when using wide field of view cameras or computer-generated images.
Innovation Solution
A method and device that process peripheral images by applying a light correction function to adapt luminance based on human vision characteristics, decreasing luminance above a high threshold and maintaining it below a low threshold to match the central image's luminance, ensuring a consistent and immersive viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If peripheral images are extended using wide field of view cameras or computer generated images, then user immersiveness is improved, but excessive luminance is generated causing distraction and compromising artistic intent
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance of peripheral images based on their distance from the center of the display. A luminance correction function is applied that reduces luminance for peripheral regions while maintaining or enhancing central region luminance, creating a luminance gradient that matches human visual perception characteristics and prevents excessive ambient light while preserving immersiveness
2Manufacturing precision
If luminance of peripheral images is increased to enhance visibility and detail, then image quality is improved, but global ambient light increases causing viewer distraction
Solution Approach 1:
The patent applies local quality by differentiating the luminance treatment across different spatial regions of the display. Central images maintain their original luminance or receive enhancement, while peripheral images receive luminance reduction. This spatially varying quality treatment ensures that image quality is optimized where needed while preventing harmful ambient light effects in peripheral regions
3Ease of manufacture
If simple color projection technology is used around the screen, then ease of implementation is improved, but detail, shape and motion impression are lost
Solution Approach 1:
The patent applies segmentation by dividing the display into central and peripheral regions, with different processing applied to each. The central image is processed to maintain or enhance its quality, while peripheral images are generated and processed separately with luminance correction. This segmentation allows simple implementation of the core system while adding sophisticated luminance control to preserve essential visual information in peripheral regions
Data Source
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AI summary
A method for processing at least one peripheral image that when displayed extends beyond the borders of a displayed central image is disclosed. The method comprises adapting luminance of the peripheral image to human vision characteristics wherein the luminance of peripheral images is processed so that the rendered light from the peripheral image in the viewer field of view remains low and close to the light rendered by the central view only. According to a first embodiment, the method comprises adapting luminance of the peripheral image to a reference reflectance level by applying a light correction function to the input luminance wherein such light correction function is obtained by measuring a rendered luminance level of the displayed peripheral image adapted to the reference reflectance level of the surface where is displayed the peripheral image.. According to a second embodiment, the luminance is further adapted to real reflectance with respect to reference reflectance. According to a third embodiment, the luminance of moving object in the peripheral image is increased.